[asterisk-bugs] [JIRA] (ASTERISK-20128) Virtualized asterisk.org 1.8.14.0 no longer runs in a KVM virtualized environment. Compiles without error, but fails with Illegal instruction on launch Regression since 1.8.13.0 Last good 1.8.12.2

[PowerPBX (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-20128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=207289#comment-207289 ] 

PowerPBX commented on ASTERISK-20128:
-------------------------------------

This is what worked for us on CentOS 6 KVM using Asterisk 11.4.0 which also apparently has this problem.  Your mileage may vary.

./configure CFLAGS=-mtune=generic

If you want to be more precise get your cputype:
cat /proc/cpuinfo

Find it in gcc cpu options.
http://gcc.gnu.org/onlinedocs/gcc/i386-and-x86_002d64-Options.html

Then use:
./configure CFLAGS=-march=mycputype

My guess is that Asterisk is using
-march=native
Which is getting it wrong for VM's sometimes.



                
> Virtualized asterisk.org 1.8.14.0  no longer runs in a KVM virtualized environment.     Compiles without error,  but fails with Illegal instruction on launch  Regression since 1.8.13.0     Last good 1.8.12.2  
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: ASTERISK-20128
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-20128
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: .Release/Targets
>    Affects Versions: 1.8.13.0, 1.8.14.0
>         Environment: verified on Centos 6.2 and 6.3 - 64 bit
> running in KVM virtualized instances with the following  /proc/cpuinfo 
> processor	: 0
> vendor_id	: AuthenticAMD
> cpu family	: 6
> model		: 2
> model name	: QEMU Virtual CPU version 0.15.1
> stepping	: 3
> cpu MHz		: 1497.505
> cache size	: 512 KB
> fpu		: yes
> fpu_exception	: yes
> cpuid level	: 4
> wp		: yes
> flags		: fpu de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx lm up unfair_spinlock pni cx16 popcnt hypervisor lahf_lm svm abm sse4a
> bogomips	: 2995.01
> TLB size	: 1024 4K pages
> clflush size	: 64
> cache_alignment	: 64
> address sizes	: 40 bits physical, 48 bits virtual
> power management:
>            Reporter: mike
>            Assignee: Kinsey Moore
>         Attachments: cat-proc-cpuinfo-with-different-settings.txt, console-logfile.txt, cpu-flags-defaultKVM-forcedKVM-baremetal.txt, KVM-Virt-Manager-defaults.png, KVM-Virt-Manager-forced-CPU.png
>
>
> We are running asterisk 1.8.X instances in virtual machines.
> The asterisk virtual machines are running Centos 6.2 and 6.3.
> Kernel of virtual machines is :  2.6.32-279.1.1.el6.x86_64 #1 SMP Tue Jul 10 13:47:21 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
> KVM Hypervisor / host is a Fedora 16 with the latest kernel :  3.4.4-4.fc16.x86_64 #1 SMP Thu Jul 5 20:01:38 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
> Hardware is HP ProLiant N40L  MicroServer 
> Any asterisk version higher than 1.8.12.2 fails with a "illegal instruction" on launch of asterisk.

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